Very little about The Engineer is known, beyond his obvious engineering prowess. It's never confirmed if the Engineer is a Terminator or a human, but Cameron refers to the engineer as a "him", suggesting that he might be a human male. He got a job working at the bank building the vault. He was somehow able to scavenge parts for both an isotope weapon and a time machine, and build them as well. He hid both pieces of technology inside safety deposit boxes in the vault; this suggests that he either had enough resources to rent the boxes for 36 years, or that he had a high level of access to the vault.

The Engineer's fate is unknown.

Contents

Name

The Engineer's name may have been E. Boykins as the keys to the safety deposit boxes containing the components needed to build the isotope weapon were stored in a box belonging to an E. Boykins. However, this is most likely not the real name of the Engineer, but probably served as his alias while working for the bank.[1]

Quotes

Cameron: You can't bring anything through when you come. (starts building weapon out of items they've taken out of safety deposit boxes) Not weapons, not clothing, nothing. You send someone back to build it.

Notes

It is heavily implied that The Engineer is a member of the Resistance, as Cameron refers to him as "one of our best engineers". She also says that he built the vault so that "we'd always have a way back home." That said, it's never explicitly confirmed that he is a member of the Resistance.

It's also heavily implied that the same engineer built both the time displacement equipment and the isotope weapon. Cameron refers to the builder of the isotope weapon as "one of our best engineers" and later says, "The Engineer got a job building the vault."